Design, fabrication and expected performance of the HEAO-B X ray telescope
Abstract
The X-ray telescope of the second High Energy Astronomy Observatory (HEAO-B) is described. The design consists of four concentric paraboloid/hyperboloid pairs. Focal length is 3.44 meters, paraboloid diameters vary from 580-336 mm, grazing angles vary from 70 to 40 arcmin for paraxial rays, segment lengths are 511 mm. The reflecting surfaces are nickel-coated fused quartz and the resolution is limited by assembly errors (for small field angles) and design aberrations (for large field angles). The local slope, roundness, and surface roughness are identified as the primary optical tolerances connected with the individual elements.
- Publication:
-
X-ray imaging
- Pub Date:
- 1977
- DOI:
- 10.1117/12.955465
- Bibcode:
- 1977SPIE..106..136V
- Keywords:
-
- Heao;
- Mirrors;
- Spaceborne Astronomy;
- X Ray Telescopes;
- Design Analysis;
- Error Analysis;
- Fabrication;
- Paraboloid Mirrors;
- Surface Roughness;
- Astronomy